414 lines
12 KiB
C
414 lines
12 KiB
C
/******************************************************************************
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Copyright (c) 1999 Daniel Stenberg
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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******************************************************************************/
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#include <stdio.h>
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#include <ctype.h>
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#include <time.h> /*OIS*0.92*/
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#include "cppdef.h"
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#include "cpp.h"
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ReturnCode fpp_openfile(struct Global *global, char *filename)
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{
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/*
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* Open a file, add it to the linked list of open files.
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* This is called only from fpp_openfile() in cpp2.c.
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*/
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FILE *fp;
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ReturnCode ret;
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if (global->openfile)
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fp = global->openfile(filename, "r", global->userdata);
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else
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fp = fopen(filename, "r");
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if (fp == NULL)
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ret=FPP_OPEN_ERROR;
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else
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ret=fpp_addfile(global, fp, filename);
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if(!ret && global->depends) {
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global->depends(filename, global->userdata);
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}
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if(!ret && global->showincluded) {
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/* no error occured! */
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fpp_Error(global, "cpp: included \"");
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fpp_Error(global, filename);
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fpp_Error(global, "\"\n");
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}
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return(ret);
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}
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ReturnCode fpp_addfile(struct Global *global,
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FILE *fp, /* Open file pointer */
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char *filename) /* Name of the file */
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{
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/*
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* Initialize tables for this open file. This is called from fpp_openfile()
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* above (for #include files), and from the entry to cpp to open the main
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* input file. It calls a common routine, fpp_getfile() to build the FILEINFO
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* structure which is used to read characters. (fpp_getfile() is also called
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* to setup a macro replacement.)
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*/
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FILEINFO *file;
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ReturnCode ret;
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ret = fpp_getfile(global, NBUFF, filename, &file);
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if(ret)
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return(ret);
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file->fp = fp; /* Better remember FILE * */
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file->buffer[0] = EOS; /* Initialize for first read */
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global->line = 1; /* Working on line 1 now */
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global->wrongline = FPP_TRUE; /* Force out initial #line */
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return(FPP_OK);
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}
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int fpp_dooptions(struct Global *global, struct fppTag *tags)
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{
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/*
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* fpp_dooptions is called to process command line arguments (-Detc).
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* It is called only at cpp startup.
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*/
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DEFBUF *dp;
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char end=FPP_FALSE; /* end of taglist */
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while(tags && !end) {
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switch(tags->tag) {
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case FPPTAG_END:
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end=FPP_TRUE;
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break;
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case FPPTAG_INITFUNC:
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global->initialfunc = (char *) tags->data;
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break;
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case FPPTAG_DISPLAYFUNCTIONS:
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global->outputfunctions = tags->data?1:0;
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break;
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case FPPTAG_RIGHTCONCAT:
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global->rightconcat = tags->data?1:0;
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break;
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case FPPTAG_OUTPUTMAIN:
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global->outputfile = tags->data?1:0;
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break;
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case FPPTAG_NESTED_COMMENTS:
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global->nestcomments = tags->data?1:0;
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break;
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case FPPTAG_WARNMISSINCLUDE:
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global->warnnoinclude = tags->data?1:0;
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break;
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case FPPTAG_WARN_NESTED_COMMENTS:
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global->warnnestcomments = tags->data?1:0;
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break;
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case FPPTAG_OUTPUTSPACE:
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global->showspace = tags->data?1:0;
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break;
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case FPPTAG_OUTPUTBALANCE:
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global->showbalance = tags->data?1:0;
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break;
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case FPPTAG_OUTPUTINCLUDES:
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global->showincluded = tags->data?1:0;
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break;
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case FPPTAG_SHOWVERSION:
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global->showversion = tags->data?1:0;
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break;
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case FPPTAG_WARNILLEGALCPP:
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global->warnillegalcpp = tags->data?1:0;
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break;
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case FPPTAG_OUTPUTLINE:
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global->outputLINE = tags->data?1:0;
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break;
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case FPPTAG_KEEPCOMMENTS:
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if(tags->data) {
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global->cflag = FPP_TRUE;
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global->keepcomments = FPP_TRUE;
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}
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break;
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case FPPTAG_DEFINE:
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/*
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* If the option is just "-Dfoo", make it -Dfoo=1
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*/
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{
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char *symbol=(char *)tags->data;
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char *text=symbol;
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while (*text != EOS && *text != '=')
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text++;
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if (*text == EOS)
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text = "1";
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else
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*text++ = EOS;
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/*
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* Now, save the word and its definition.
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*/
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dp = fpp_defendel(global, symbol, FPP_FALSE);
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if(!dp)
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return(FPP_OUT_OF_MEMORY);
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dp->repl = fpp_savestring(global, text);
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dp->nargs = DEF_NOARGS;
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}
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break;
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case FPPTAG_IGNORE_NONFATAL:
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global->eflag = FPP_TRUE;
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break;
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case FPPTAG_INCLUDE_DIR:
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if (global->incend >= &global->incdir[NINCLUDE]) {
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fpp_cfatal(global, FATAL_TOO_MANY_INCLUDE_DIRS);
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return(FPP_TOO_MANY_INCLUDE_DIRS);
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}
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*global->incend++ = (char *)tags->data;
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break;
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case FPPTAG_INCLUDE_FILE:
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case FPPTAG_INCLUDE_MACRO_FILE:
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if (global->included >= NINCLUDE) {
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fpp_cfatal(global, FATAL_TOO_MANY_INCLUDE_FILES);
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return(FPP_TOO_MANY_INCLUDE_FILES);
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}
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global->include[(unsigned)global->included] = (char *)tags->data;
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global->includeshow[(unsigned)global->included] =
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(tags->tag == FPPTAG_INCLUDE_FILE);
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global->included++;
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break;
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case FPPTAG_BUILTINS:
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global->nflag|=(tags->data?NFLAG_BUILTIN:0);
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break;
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case FPPTAG_PREDEFINES:
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global->nflag|=(tags->data?NFLAG_PREDEFINE:0);
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break;
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case FPPTAG_IGNORE_CPLUSPLUS:
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global->cplusplus=!tags->data;
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break;
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case FPPTAG_SIZEOF_TABLE:
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{
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SIZES *sizp; /* For -S */
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int size; /* For -S */
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int isdatum; /* FPP_FALSE for -S* */
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int endtest; /* For -S */
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char *text=(char *)tags->data;
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sizp = size_table;
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if ((isdatum = (*text != '*'))) /* If it's just -S, */
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endtest = T_FPTR; /* Stop here */
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else { /* But if it's -S* */
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text++; /* Step over '*' */
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endtest = 0; /* Stop at end marker */
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}
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while (sizp->bits != endtest && *text != EOS) {
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if (!isdigit(*text)) { /* Skip to next digit */
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text++;
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continue;
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}
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size = 0; /* Compile the value */
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while (isdigit(*text)) {
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size *= 10;
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size += (*text++ - '0');
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}
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if (isdatum)
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sizp->size = size; /* Datum size */
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else
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sizp->psize = size; /* Pointer size */
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sizp++;
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}
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if (sizp->bits != endtest)
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fpp_cwarn(global, WARN_TOO_FEW_VALUES_TO_SIZEOF, NULL);
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else if (*text != EOS)
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fpp_cwarn(global, WARN_TOO_MANY_VALUES_TO_SIZEOF, NULL);
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}
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break;
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case FPPTAG_UNDEFINE:
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if (fpp_defendel(global, (char *)tags->data, FPP_TRUE) == NULL)
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fpp_cwarn(global, WARN_NOT_DEFINED, tags->data);
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break;
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case FPPTAG_OUTPUT_DEFINES:
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global->wflag++;
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break;
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case FPPTAG_INPUT_NAME:
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strcpy(global->work, tags->data); /* Remember input filename */
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global->first_file=tags->data;
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break;
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case FPPTAG_DEPENDS:
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global->depends=(void (*)(char *, void *))tags->data;
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break;
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case FPPTAG_INPUT:
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global->input=(char *(*)(char *, int, void *))tags->data;
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break;
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case FPPTAG_OUTPUT:
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global->output=(void (*)(int, void *))tags->data;
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break;
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case FPPTAG_ERROR:
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global->error=(void (*)(void *, char *, va_list))tags->data;
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break;
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case FPPTAG_USERDATA:
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global->userdata=tags->data;
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break;
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case FPPTAG_LINE:
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global->linelines= tags->data?1:0;
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break;
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case FPPTAG_EXCLFUNC:
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global->excludedinit[ global->excluded++ ] = (char *)tags->data;
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break;
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case FPPTAG_WEBMODE:
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global->webmode=(tags->data?1:0);
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break;
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case FPPTAG_ALLOW_INCLUDE_LOCAL:
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global->allowincludelocal=(tags->data?1:0);
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break;
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case FPPTAG_FILEOPENFUNC:
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global->openfile = (FILE* (*)(char *,char *,void *))tags->data;
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break;
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default:
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fpp_cwarn(global, WARN_INTERNAL_ERROR, NULL);
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break;
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}
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tags++;
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}
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return(0);
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}
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ReturnCode fpp_initdefines(struct Global *global)
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{
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/*
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* Initialize the built-in #define's. There are two flavors:
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* #define decus 1 (static definitions)
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* #define __FILE__ ?? (dynamic, evaluated by magic)
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* Called only on cpp startup.
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*
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* Note: the built-in static definitions are supressed by the -N option.
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* __LINE__, __FILE__, __TIME__ and __DATE__ are always present.
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*/
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char **pp;
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char *tp;
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DEFBUF *dp;
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struct tm *tm;
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int i;
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time_t tvec;
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static char months[12][4] = {
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"Jan", "Feb", "Mar", "Apr", "May", "Jun",
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"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
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};
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/*
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* Predefine the built-in symbols. Allow the
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* implementor to pre-define a symbol as "" to
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* eliminate it.
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*/
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if (!(global->nflag & NFLAG_BUILTIN)) {
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for (pp = global->preset; *pp != NULL; pp++) {
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if (*pp[0] != EOS) {
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dp = fpp_defendel(global, *pp, FPP_FALSE);
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if(!dp)
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return(FPP_OUT_OF_MEMORY);
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dp->repl = fpp_savestring(global, "1");
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dp->nargs = DEF_NOARGS;
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}
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}
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}
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/*
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* The magic pre-defines (__FILE__ and __LINE__ are
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* initialized with negative argument counts. fpp_expand()
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* notices this and calls the appropriate routine.
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* DEF_NOARGS is one greater than the first "magic" definition.
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*/
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if (!(global->nflag & NFLAG_PREDEFINE)) {
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for (pp = global->magic, i = DEF_NOARGS; *pp != NULL; pp++) {
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dp = fpp_defendel(global, *pp, FPP_FALSE);
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if(!dp)
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return(FPP_OUT_OF_MEMORY);
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dp->nargs = --i;
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}
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#if OK_DATE
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/*
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* Define __DATE__ as today's date.
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*/
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dp = fpp_defendel(global, "__DATE__", FPP_FALSE);
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tp = malloc(32);
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if(!tp || !dp)
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return(FPP_OUT_OF_MEMORY);
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dp->repl = tp;
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dp->nargs = DEF_NOARGS;
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time(&tvec);
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tm = localtime(&tvec);
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sprintf(tp, "\"%3s %2d %4d\"", /* "Aug 20 1988" */
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months[tm->tm_mon],
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tm->tm_mday,
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tm->tm_year + 1900);
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/*
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* Define __TIME__ as this moment's time.
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*/
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dp = fpp_defendel(global, "__TIME__", FPP_FALSE);
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tp = malloc(11);
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if(!tp || !dp)
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return(FPP_OUT_OF_MEMORY);
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dp->repl = tp;
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dp->nargs = DEF_NOARGS;
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sprintf(tp, "\"%2d:%02d:%02d\"", /* "20:42:31" */
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tm->tm_hour,
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tm->tm_min,
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tm->tm_sec);
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#endif
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}
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return(FPP_OK);
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}
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void fpp_delbuiltindefines(struct Global *global)
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{
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/*
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* Delete the built-in #define's.
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*/
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char **pp;
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/*
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* Delete the built-in symbols, unless -WW.
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*/
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if (global->wflag < 2) {
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for (pp = global->preset; *pp != NULL; pp++) {
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fpp_defendel(global, *pp, FPP_TRUE);
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}
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}
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/*
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* The magic pre-defines __FILE__ and __LINE__
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*/
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for (pp = global->magic; *pp != NULL; pp++) {
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fpp_defendel(global, *pp, FPP_TRUE);
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}
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#if OK_DATE
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/*
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* Undefine __DATE__.
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*/
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fpp_defendel(global, "__DATE__", FPP_TRUE);
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/*
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* Undefine __TIME__.
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*/
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fpp_defendel(global, "__TIME__", FPP_TRUE);
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#endif
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return;
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}
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